The purpose of the proposed pilot study is to extend previous findings regarding the impact of a brief cognitive behavioral treatment for chronic nightmares by examining the emotional, cognitive, behavioral, and health-related changes following treatment. Experiencing a traumatic event may initiate or exacerbate the occurrence of nightmares. Indeed, sleep disturbance, including nightmares, is considered a hallmark of posttraumatic stress disorder (PTSD). Nightmares have been related to a variety of factors including stress, medications, trauma, and substance use. Among veterans, especially combat veterans or those reporting sexual assaults, symptoms of traumatic stress and nightmares are extremely common. Few studies have investigated the efficacy of nightmare treatment in a veteran population, and the impact of nightmare treatment on suicidal ideation has never been assessed.